Driving-band



H. A. S. READ.

DRIVING BAND.

APPLICATION FILED SEPT. 20, 1918.

1,339,287, Patented May 4, 1920.

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0 52 INVENTOR.

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ATT'ORNEY.

HARRY A. S. READ, 0F 'ANDOVER, MASSACHUSETTS.

DRIVING-BAND.

Specification of Letters Patent.

Patented May 4, 1920.

Application filed September 20, 1918. Serial No. 254,982.

To aZZ whom it may concern:

I Be it known that I, HARRY A. S. READ, a citizen of the United States, residin at Andover, in the county of Essex and Ftate of Massachusetts, have invented certain new and useful Improvements in Driving-Bands, of which the following is a specification.

This invention has special reference to such driving bands as are used in spinning and twisting machines for making yarn or thread.

It is desirable that such bands should cling to the pulley and-that there should, be very little slipping caused by the natural stretch of the material or by atmospheric conditions.

A loose band is almost sure to slip and there is no practical way to tighten it. The use of a weight or other device to take up the stretch is also objectionable.

Such bands are now usually made of a high-grade long staple cotton. Such a cotton band, if oiled, will slip.

I have discovered that 'a band properly made of paper, particularly of a certain kind of paper, and if properly treated, is better than one made of cotton or other material for the reasons that it clings more closely to the pulley, it is not affected by moisture or other atmospheric conditions, and it stretches much less. Besides this, it wears longer than most other materials.

My invention is a driving band formed of two or more cords or strands of paper arranged lengthwise of the band and bound together, preferably by twisting, or in any other way such as by weaving between such cords or strands, cords or threads of paper, jute, flax, hemp or other suitable material.

I prefer to use kraft paper made on a cylinder machine, whereby the fibers are made more parallel, cut in ribbons of uniform width and preferably twisted to form cords. I prefer to treat such cords or preferably the completed band with lubricating oil or other suitable material, by soaking and draining, to make the band pliable, to resist moisture and to cause it to stick to the pulley.

Where I use a twisted band, I prefer'to make it of two or more ply, to cut the ends unevenly, bring them together and twist so that there will be a loop at each end and so that the ends of the constitutent cords will be twisted into the band.

Where I use a woven band, I prefer to make it :of two or more ply with two perfect selvage edges, and after it is finished I prefer to pass it between heavy calender rolls to compact thematerial and to make the band stronger.

'Such a band made of paper strands arranged lengthwise, bound together by twisting or weaving, and oiled, is not only tough and pliable, but it is of uniform strength, it clings closely to thepulleys, has very little stretch and is not affected by moisture.

I prefer to use kraft paper made on a cylinder machine without a spreader or mixer, but I may use paper made on any machine in such a way that the fibers are relatively parallel with the length of the paper ribbons before they are twisted into cords.

In the drawings, Figure 1 is an elevation of a single twisted strand of paper which has been cut lengthwise as a ribbon of uniform width andtwistedinto a cord. Fig. 2 is asimilar view of four such single-ply cords twisted to form a four-ply cord; Fig.

3 is a view of such a fourply'cord cut and -bent ready for further twisting. Fig. 4

shows such double four-ply cord after twisting, with a belt hook insertedat one end. Fig. 5 shows the two ends brought together and the belt hook crimped. Fig. 6 is a plan view of a band in which the lengthwise strips are held together by weaving. Fig.

1 7 is a section on line 7-7 of Fig. 6, and Fig.

8 is a section on line 8-8 of Fig. 6. Fig. 9

is a similar section or modificationas woven,

and Fig. 10 shows the same construction after being calendered. Figs. 11,12, 13 show other weaves.

I prefer to use kraft paper made on a cylinder machine out in ribbons lengthwise and twisted, as shown at 10 in Fig. 1, and

then twist two or more of such cords as, for

instance, 10, 11, 12 and 13, to form the four ply cord A, shown in Fig. 2.

I cut off sections of such cord A slightly more than twice the length of the band to be made, and out these ends preferably, as shown at 20, 21, 22, 23, 24, 25, 26 and 27, in unequal lengths and overlap them, as shown in Fig. 3.

By any suitable means, the doubled multiple-ply cord A is again twisted so as to form a loop at each end and to twist into the body of the band the ends of the constituent single-ply cordswhich go to make the multiple-ply cord A. These ends will usually be so well twisted in that they can hardly be discovered.

In making a band or in putting it in place, I prefer to pass through the loops 30 and 31 at its ends a belt hook, such as H, and to then crimp the ends thereof so that there will be no rough edges to catch the hands of the spinner when stopping the band, as is frequently done. The crimped hook H is shown in Fig. 5.

It will be observed that in the above construction the strands of paper are arranged lengthwise of the band, and the strength thereof is wholly dependent upon the paper. The separate strands or cords may be placed in oil which can then be drained off, or the complete band can be treated in the same manner. I prefer to use lubricating oil for this purpose.

Instead of being twisted together, I may use strands or twisted cords 40, 41, 42, 43, 44, 45, etc., arranged lengthwise of the band, and bind them together by weaving in a weft or binding thread, such as 50, prefer ably thus forming a fabric of two or more ply with perfect selvage edges at 51 and 52. This binding thread may be made of paper, jute, linen, cotton, ramie, or any other suitable material.

In Fig. 9, I show a cross section of a multiple-ply fabric made of longitudinal four-ply paper cords, such as 60, bound together by binding thread 61, as shown.

With this woven construction or that shown in Figs. 6, 7 and 8, or in any other, I prefer a multiple-ply fabric and, after oiling, I prefer to flatten it out to compact the material by passing it through powerful calender rolls whereby it assumes the appearance shown in Fig. 10.

It will be observed that the calendering forces the binding thread into the warp.

In Fig. 11, I show a closely woven single ply fabric, having a warp of threads 70 each made of single ply twisted paper and a binding thread or weft 71 of any suitable material. The binding thread 71 is shown as 'well beaten up by the reeds in weaving. Fig. 12 is a view from the right of Fig. 11.

Fig. 13 shows a two-ply warp and weft of well known weave, having two sets of warp threads 80, 81 and two sets of weft threads 82 83. All are shown as of twisted paper.

I claim:

1. As a new article of manufacture, a driving band made of a plurality of cords each formed of kraft paper made on a cylinder machine and twisted, said cords being twisted together, the cords at the ends being cut at different points and the ends overlapped, the cords being again'twisted so as to form a loop at each end and to twist into the body of the band the ends of the cords, such band being treated with lubricating oil, combined with a metal hook passed through each loop and so crimped together as to leave'no rough edges. 7

2. As a new article of manufacture, a driving band made of a plurality of cords each formed of kraft paper made on a cylinder machine and twisted, said cords being twisted together, the cords at the ends being cut at different points and the ends overlapped, the cords being again twisted so as to form a loop at each end and to twist into the body of the band the ends of the cords, such band being treated with lubricating oil.

3. As a new article of manufacture, a driving band consisting of a plurality of cords each made of strands of twisted paper so twisted together as to have a loop at each end, the ends of each strand being twisted into the body of the band.

In testimony whereof I have affixed my signature.

HARRY A. s. READ.

Witnesses FRED H. EATON, MILLICENT A. BARDSLEY. 

